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(No Model.) I v J. G. VON HOPE.

METAL DRILLING" ATTACHMENT FOR FIRE HOSE- No. 518,814. Patented Apr.24,1894.

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wnnme NITED STATES PATENT OFFICE.

JOHN G. VON HOFE, OF NEW YORK,'N. Y.

METAL-DRILLING ATTACHMENT FOR FIRE-HOSE- SPECIFICATION forming part ofLetters Patent No. 518,814, dated April 24:, 1894.

Application filed July 6,1893. Serial No. 479,766. (No model.)

To alt whom it may concern.-

l 3e 1t known that I, JOHN G. VON HOFE, a citizen of the United States,and a resident of New York, in the county of New York and State of NewYork, have invented certain new and useful Improvementsin Metal-DrillingAttachments for Fire-Hose, of which the following is a specification.

This invention relates to certain new and useful lmprovements in hoseattachments, and is particularly designed for use by the firedepartment, as an auxiliary tool or apphance.

Where a building is provided with sheetmetal shutters, or with heavybars, the firemen are at a great disadvantage in directing streams ofwater to the interior of the building, and to some desirable partthereof. The common practice in fighting fires in a warehouse or otherbuilding having such shutters, is to attempt to break the bolt holdingthe same, and to force or pry them open. If this is unsuccessful, thefiremen are obliged to wait until said shutters become red hot, when astream of water directed against them will,

cause them to warp or crack, and permit the opening thereof. Whilewaiting for the shutters to become sufficiently heated, much Valuableproperty is frequently destroyed, and it is therefore the object of myinvention to sever one or more of the iron bars with which the buildingmay be, protected or to out a hole through the shutters'of sufficientsize to permit the insertion of a hose nozzle, or toadmit the hand toopen the bolt thereof.

To these ends, therefore, my said invention consists in utilizing thepressure of water in a fire hose to revolve appropriate cuttingmechanism, to effect the desired end.

Referring to the accompanying drawings, in the figures of which likeparts are similarly designated, Figure 1, is an elevation showing oneform of apparatus for practicing my invention; and Fig.2, is an enlargedsectional view of the upper end thereof.

To the free end of a fire hose a, the opposite end of which is incommunication with any suitable source of power, such as a fire engine,hydrant, &c., I attach a small but powerful water motor 12, having theexhaust c, and from said motor I run a flexible shaft d, provided withthe usual casing e, on the threads, a chuck or other holding mechanism.

If desired, the cap j, may be placed over the cutting-tool, when not inuse, to prevent injury thereto or therefrom, and at some convenientpoint the perforated lug or eye Z, may be located, through which thedevice maybe strapped to a ladder and to prevent kicking by the pressurein the hose, and the rotation of the motor.

The operation of my invention will be apparent from the foregoing.

Upon reaching a fire, in a building protected by the metal bars orshutters aforesaid, the hose is run off and attached in the usualmanner;-the nozzle thereof is unscrewed, and the connection to watermotor 1) inserted in its place. Upon pressure being allowed to flow tosaid motor, it will rapidly revolve, thereby rotating flexible shaft d,and cutting tool it, the point of which is held by the handle f, againstthe shutter or bar on the floor where it is desired to direct a stream,until an aperture or opening is made therein, and then said handle andtool are slowly moved about the aperture until the hole is of sufficientdiameter, or the bar or bars have been severed.

If desired, a valve 70, for regulating the,

pressure of water to the motor b, may be arranged between said motor andhose a, or said regulation may be made at the fire engine.

I do not desire to limit myself in any way to the particular mechanismhere shown and described, nor to the details of construction thereof, asobviously, many other forms of apparatus may be used to carry myinvention into practice, without departing from the principle and scopeof the said invention, the gist of which lies in applying the pressureof water in a fire hose to rotate a water motor, which in turn, rotatesa cutting tool.

Obviously, if desired, the connection between hose CL, and motor b, maybe shorter than that shown in Fig. 1, of the drawings,

and, as stated, valve is, may be omitted, while by a simple screw threadarrangement on the nozzle, the removal thereof from the hose, to attachsaid motor, may be dispensed with. 5 Again, the flexible shaft d, may,if desired,

be entirely omitted, or may be of any construction and of any lengthdesirable. The invention is also not limited to the particular style ofcutting tool shown, as any ap- Ia propriate arrangement of drill pointand teeth may be used, provided only that the same are powerful andrapid.

What I claim as new, and desire to secure by Letters Patent, is-

1. An apparatus for attacking metallic shutters, doors, and like guardsfor buildings in case of fire to enable firemen to gain access theretofrom the outside, which consists of a water motor provided with acoupling for connecting it with fire hose to receive the hydraulicpressure therefrom to drive it, a metal cutting tool and a driving shaftinterposed between the cutting tool and the motor, substantially asdescribed.

2. An apparatus for attacking metallic shutters, doors, and like guardsfor buildings in case of fire to enable firemen to gain access theretofrom the outside, which consists of a water motor provided with acoupling for connecting it with fire hose to receive the hydraulicpressure therefrom to drive it, a

metal cutting tool, a driving shaft interposed between the cutting tooland the motor, and a hand-piece next the cutting tool, substantially asdescribed.

3. An apparatus for attacking metallic shutters, doors, and like guardsfor buildings in case of fire to enable firemen to gain access theretofrom the outside, which consists of a water motor provided with acoupling for connecting it with fire hose to receive the hydraulicpressure therefrom to drive it, an eye connected with some part of saidmotor by which it may be supported in position for operation,a metalcutting tool,and a driving shaft interposed between the cutting tool andthe motor, substantially as described.

Signed at New York, in the county of New York and State of New York,this th day of June, A. D. 1893. t

JOHN G. VON HOFE. Witnesses:

GEO. D. VON Horn, FREDERIC CARRAGAN.

